431 Series - 0603 Very Fast-Acting Thin-Film Fuse

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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

This product is obsolete. For new designs please use the 434 or 467 Series products.

Access specifications, certifications, check availability and order parts below

Catalog #VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
BodyOpeningOperating TemperaturePartner ECAD ModelsCompare
431.25032320.0030.375Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431.250
431.37532320.0050.265Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431.375
431.50032320.00870.193Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431.500
431.75032320.01710.114Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431.750
431001.32320.0210.072Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431001.
431002.32320.1040.036Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431002.
431003.32320.1980.023Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431003.
431004.32320.3520.017Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431004.
431005.32321.2970.013Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C431005.
43101.532320.05260.048Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C43101.5
43102.532320.1750.028Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C43102.5
43103.532320.2650.019Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C43103.5
To request product environmental information, please complete the Product Environmental Information Request Form.

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